Rail-adjusting mechanism



May 13, 1930. JENNE "1,758,321

RAIL ADJUSTING MECHANISM- Filed June 11, 1928 Patented May 13, 1930 UNITED STATES PATENT OFFICE JACOB JENNE, OF CLEVELAND, OHIO, ASSIGNOR TO THE CLEVELAND IELANER COIVL' PANY, or CLEVELAND, OHIO, A CORPORATION or OHIO RAIL-ADJUSTING. MECHANISM Application filed June 11,

This invention relates generally to a planing machine and more particularly to an adjusting mechanism for keeping the rail parallel with the top of the table and square with the face of the column or for properly adjusting the same should the parts by some unforseen means be thrown out of alignment.

All planers embody a bed or base portion from which rises a column. Mounted on the bed is a table whichis adapted for reciprocatory movement thereon in a horizontal plane and on which the work is supported. Mounted on the column at right angles thereto and adapted for reciprocatory movement in a vertical plane is a knee on which is mounted a rail. The rail carries the cutting toolswhich are mounted directly thereon and adapted for adjustment in both a vertical and a horizontal plane. In order to accurately adjust the cutting tools, it is necessary that the rail be maintained parallelwith the top of the table on which the work is supported and.

square or at right angles to the face of the column. Great difficulty and inaccurate work is invariably the result should these parts be is unable to ascertain or find out the cause of inaccurate work when the above referred to condition exists.

It is therefore the main object of this invention to provide a very simple mechanism. for determining the proper position of these parts and for properly setting the same when the necessity arises.

Another object of the invention is to'provide an adjusting mechanism of the character set forth which is simple in construction and efficient in operation and which comprises comparatively few parts and which may be operated with a minimum effort without disturbing the adjustment of any other parts of the machine.

Further and more limited objects of the invention will appear as the description proceeds and by reference to the accompanying drawing in which Fig. 1 is a view in end elevation of a planer showing the relative position of the several parts, Fig. 2 is a ver- 1928. Serial No. 284,435.

reciprocatory movement in a horizontal plane. Rising fromthe bed 1 is the column 3.

.Mounted on the column 3 and at right angles thereto is a knee 4 which is adapted for reciprocatory movement thereon in a vertical plane in a manner well known to those skilled 5 which is preferably rectangular in shape and on which are mounted rail heads 6 and 7 Extending longitudinally of the rail are a pairof threaded rods Sand 9 which serve to move the rail heads in eitherdirection in a horizontal plane. Disposed between the rods 8 and 9 is a fulcrum pin or rod 10 about which the rail headsfulcrum. The mechanism thus far describedis well known to those skilled in the art and forms no part ofthe present invention.

i The rail 4 is shaped in section as shown most clearly in Fig. 2 and the surface of the .same contiguous to and bearingagainst the screw 12 the outer end of which is enlarged as shown at 13, the purpose of which will hereinafter appear. The rear side of the rail 5 bears against the frontface of the knee 4, the abutting surfaces being machined. The face of the knee is provided with" a plurality of recesses 14 adapted to receive the enlarged portions 13 of the screws 12. The recesses 14 are of such'a sizethatthe enlarged portions 13 fit neatly therewithin. The knee 4 immediately opposite each recess 14 is provided with a pair of oppositely disposed ver- V in the art. Carriedby the knee 4. is the rail tically' extending threaded bores 15 and 16.

Threadedly secured within each of the bores 17 and 18 are pins or screws 15 and 16. The outer ends of the bores 17 and 18 are enlarged so as to receive the heads of the screws therein as shown most clearly in Fig. 2. The inthe screws 15 and tightening the screws 16,

or vice versa, the rail 5 maybe raised or lowered with respect to the knee 4.-

Extending through the knee 4 at spaced points are a plurality of horizontally extending slots or passageways 19 and 20, disposed in pairs on opposite sides of the same, as shown most clearly in Fig. 3; Arranged within the slots 19 and 20 respectively are clamping screws 21 and 22. The screws 21 and 22 extend through the knee tand threadedly engage in threaded recesses or bores 23 and 24 respectively, in the rail 5. It will thus be seen that the clamping screws 21 and 22 may be tightened to securely clamp the rail and knee against displacement, the slots 19. being sufliciently large to permit a; limited relative movement of the knee and rail.

It will now be clear that Ihave'provided an adjusting mechanism for, adjusting the posiion of the'rail with respect to the knee and the top of the table and whereby the rail may be secured in parallel relation with respect to the top of the table andsquare with the face of the column. WVith the parts in theposition shown in Figs. 2 and 3 the upper and lower edges of the rail and knee will lie in the same plane. Should the parts be moved out of the proper alignment the screws 21 and 22 may be loosened and the screws 15 and 16 adjusted to move the rail either up or down, as desired, and the proper relative positions restored.

It will now be clear that I have provided an adjusting mechanism which will accomplish the objects ofthe invention as 'hereinbefore stated. Various changes may be made in the shape, size and arrangement of parts without 1 departing from the'spirit of my invention and I wish my invention to be limited onlyin accordance with the scopeiof the appended claims. I

Having thus I claim is: I

1. In combination in an open-side planer, an upright, aknee member vertically movable thereon, arail member vertically slidably mounted on said kneemember and adapted to carry a tool holding mechanism,means for securin said rail member and said knee member together'in adjusted position comprising a plurality of vertical slots in one of said members spaced along the length thereof and V a screw in each of said slots threaded into the other member, and a plurality of holding and adjusting systems at spaced points along 7 said members; each comprising a slot in one of said members, opposed, threaded openings described my invention, what 7 communicating with said slot,screws threaded in each of said openings, and an extension on and rigidly carried by the other of said members and received in said slot, said screws adapted to bearagainst said extension.

2. In combination in, an open-side planer, an upright, a knee member vertically movable thereon, a rail member'vertically slidably' mounted on said knee member and adapted to carry" a tool holding mechanism, means for securing said rail member-and said knee member together in, adjusted position comprising a plurality of vertical slots in one of said members spaced along the length thereof and a screw in each of said slots threaded into the other member, and a plurality of holding and adjusting systems at'spaced points along said i members; each comprising a slot in one of said members, opposed, threaded openings communicating with said slot, screws threaded in each of said openings, and an extension on and rigidly carried by the other of said signature.

Y JACOB J ENNE. 

